MachO: move test to ARM directory.

This test specifies an ARM triple, so it needs ARM as a registered
target.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209905 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/MC/MachO/aliased-symbols.s b/test/MC/MachO/ARM/aliased-symbols.s
similarity index 100%
rename from test/MC/MachO/aliased-symbols.s
rename to test/MC/MachO/ARM/aliased-symbols.s